Universal base angle adapter



FIG. 1 is a perspective view of a universal base angle adapter, showing the new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top view of thereof; and,

FIG. 5 is a bottom view thereof. 

CLAIM The ornamental design for a universal base angle adapter, shown and described herein. 